(svn r12159) -Codechange: Enumify some widget magical numbers
-Cleanup: apply a bit of code style. Mostly re-indenting switch cases

(svn r11374) -Codechange: Give meaning to the magical number that specifies the color of the text in a DrawString call.
Patch heavily based on BiBB's work (FS#1383)

(svn r11188) -Codechange: rewrite of the town action related code (remove some of the magic).
-Feature: possibility to disable exclusive rights and giving money. Both by skidd13.

(svn r10323) -Codechange: reference company name, number and player (president) name
by index

(svn r10258) -Codechange: as we are now using int64 all over the place, it's better to use int64 variables in the string generating too instead of packing them into two int32s.
-Fix: some displays of money were wrong.

(svn r9844) -Codechange: replace zoomlevel with an enum
-Codechange: use predefined enums for viewport zoomlevels

(svn r8300) -Codechange: Add a prototype for DrawPlayerIcon to players.h and include that
instead of using externs. Also move DrawPlayerIcon from graph_gui.cpp to
players.cpp.

(svn r8128) -Codechange: Split sprite and palette remap into separate 32 bit values.
This lets us increase the sprite width from 14 to up to 29 bits,
effectively nulling the old sprite limit. Table changes in next commit.